
Local area network
A local area network (LAN) is a computer network covering a small geographic
area, like a home, office, or group of buildings. The defining characteristics of LANs,
in contrast to Wide Area Networks (WANs), include their much higher data transfer
rates, smaller geographic range, and lack of a need for leased telecommunication
lines.
Ethernet over unshielded twisted pair cabling, and Wi-Fi are the two most common
technologies currently, but ARCNET, Token Ring and many others have been used in
the past.
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